Machine for use in the manufacture of shoes



4 Sheets-Sheet l jwentars -He rman ATI/72h07 Xu, :E: f

afi@

- July 15, 1947. c. A. RoBxNsoN ET AL MACHINE vFOR USE IN THE MANUFACTUBE OF SHOES Filed May '7, 1945 v July 15, 1947- c. A. ROBINSON' ET AL MACHINE FOR USE IN THE MANUFACTURE OIF SHOES Filed May '7, 1945 4 Sheets-Shea?l 2 les -Eobz'nsori Herman Afm/'lof 60 Ey zhezr Azzorney /5 Inventors Jly 15, 1947- c. A- ROBINSON ET' AL 2,423,852

MACHINE FOR USE IN TVHE MANUFACTURE OF SHOES Filed May 7, 194:5v 4 Sheets-Sheet 5 y fui/wwfs Charles' .A Eoblnson Herman Ajmhof B their A #Ornag- Juy 15, m47- A C. A. ROBINSON ET AL 2,423,852r

MACHINE FOR U-SE IN THE -MANUFACTURE OF SHOES 4 sheets-Sheet 4 Filed May 7, 1945 Inventors Charles A Eobmson Herman Alm/mf jatenteri 15,v

UNITED STATES PATENT OFFICE MACHINE FOR USE IN THE MNUFACTURE OF SHOES Application May 7, 1945, Serial No. 592,484

13 Claims.

The present invention relates to machines for use in the manufacture of shoes, of the general type comprising devices for performing a series of operations along the bottom margin of ashoe and having a shoe supporting jack movable relatively to the operating devices to present the shoe properly as the operation is transferred along the shoe and, more particularly, the invention relates to improvements for such machines to prevent faulty operations -of the devices on a shoe and to assist in effectively controlling the operations Where it is occasionally necessary to perform operations individually in order to correct previous faulty ones.

The several features of the invention are herein disclosed as embodied in an automatic side lasting machine such as that illustrated and described in United States Letters Patent No. 2,201,866, granted May 21, 1940, and No. 2,252,325, granted August 12, 1941, upon the applications of Robert H.l Lawson, and in an application for United States Letters Patent Serial No. 538,974, filed April 18, 1945, in the name of the present inventors. It is to be understood, however, that, except as stated in the claims, the several features of the invention are not limited to use in any particular machine of the general type hereinbefore referred to.

In the machine of the Lawson patents, the operating devices comprise side lasting gripper and stapling units for tensioning and fastening the marginal portions of a shoe upper to the rib of an insole, beginning at the breastline of the heel .and continuing Without manual intervention through a predetermined series of operations, until the toe of the shoe is reached. When the toe of the shoe is reached, a driving and stopping mechanism in the machine acts automatically to bring the machine to rest with the upper tensioning grippers disengaged from the shoe. In that machine, the stapling units are provided with spring actuated latch released staple drivers arranged to be raised in retracted position and to be released at the proper point in each cycle of lasting operations to insert and clinch each staple just before the upper is disengaged from the tensioning grasp of the grippers. To guide the lasting operation, the lasting units, of which there are two in number, acting simultaneously at opposite sides of a shoe, are separated yieldingly and-provided with presser feet serving both as staple clinchng anvils and also as abutment gages bearing against the inner surface of opposite lasting ribs on the insole to which the upper is stapled to guide the lasting units. The yieldthe shoe Will besfaultily performed, therebeing no means for bringing the presser feet automatically back into proper operative relationship to the insole rib of the shoe. Thus, one or more staples, corresponding to the number of opera- 15 tions remaining to be performed on the shoe, will be inserted and clinched, frequently entering a marginal portion o-f the upper so far from the insole as to miss the rib. The staple will then be faultily inserted and will fail to hold the upper in place. If a faulty stapling operation is detected before the series of operations on a shoe isr comp-leted and the machine is stopped by the operator, the presser feet may be re-engaged manually with the insole rib and the lasting oper-- ations on the shoe continued to completion in the usual Way. After completion of the lasting operations the shoe may be returned to the position in which the operations were faultily performed and one or more correcting staples inserted as required. Such detection and correction of faulty lasting operations obviously requires the exercise of close observation and careful timeconsuming manual control, Whereas a primary purpose of such an automatic lasting machine is to eliminate the need for such observation and control.

To assist in inserting correcting staples, the machine of Patent No. 2,252,325 is provided with a separateV operator or manually controlled treadle lever -and suitable connections arranged to enable one or more lasting operations to be performed at a time Without causing the machine thereafter to continue automatically through its regular series of lasting operations.

The machine disclosed in the present inventors copending application has a novel and improved form of staple inserting driver mechanism, actuated positively as distinguished from being spring actuated and latch released as in the machine of the patents. To drive andv clinch a staple with certainty in the machine of the application it is desirable to actuate the staple driver with a predetermined minimum speed of movement for the best'results. If the staple driver is actuated ,55 with a slower 'speed of movement the resistance It is accordingly one of the objects of the present invention to provide an automatic shoe machine in which the diiiiculties above enumerated are avoided and particularly those difficul-A ties relating to the necessity for close observation and careful manual controlof the machine on the part of the operator either in detecting a faulty operation or in performing a single operation to correct the faulty one. Y

A further object of the invention is to simplify and improve the construction and manner of operation of the automatic side lasting machine disclosed in the patents and application above referred to in such a way that there will be less opportunity for the occurrence of improper lasting operations including the insertion of faulty staples and in which positively actuated staple drivers similar to those of the machine disclosed in the application may be utilized to set the individual staples under manual control without the possibility of actuating th'e staple driver at a speed slower than that required for proper stapling operations.

For accomplishing the above stated objects, the illustrated machine embodying the features of the present invention is equipped with devices constructed and arranged to act along the marn ginal portions of a shoe bottom to perform progressively a series of operations on a shoe, a shoe supporting jack, an operating shaft for said devices, a pattern cam shaft for the jack, a driving mechanism for rotating the shafts including a shifter member actuated through disconnectible connections from the operating shaft to throw-the driving mechanism out of operation, and a manually actuated treadle member for disconnecting said connections to start the machine in operation inwhich means is provided for causing said connections to be connected whenever a faulty-machine operation is performed, thus bringing the machine t rest immediately. In the illustrated'machine there are two sets of devices, each comprising a gripper and a stapling unit andY a presser foot engaging the inside surface cfa ribv on a shoe insole, and in accordance With this feature the means for disconnecting said connections is automatically responsive to a faulty operation of either set of devices.

As hereinafter described, the faulty operation responsive means'consists of a feeler in the form ofa finger engaging ythe inside surface of the 'insole rib in close proximity to the point at "which each operating unit acts and preferably the feeler kfinger for each operating unit is disengaged from the insole rib while the shoe is being moved and vfed from one operating position to another. With this construction'and arrangement the machine isl brought to rest di- 'rectlyafter a `faulty lasting operation has been performed so that the operator will have the least possible difficulty in correcting th-'e faulty operation. After coming to rest the machine may be adjusted manually to bring the positions of the .shoe and `the operating devices into a cor- 'rect relationship for continued operations on the shoe. After the final operation of a cornplete series has 'been performed it is then possible to return the shoe to a position where the operating devices may correct the faulty lasting operation.

, To facilitate the performance of a single correcting lasting operation, in accordance with a further feature of the invention, the illustrated machine is provided with a control member operable at the will of the operator to either one of two positions to cause a shifter member for the driving mechanism to be actuated by the treadle member and retained in actuated position either during a complete series of operations on the shoe or for the period of time only in which the treadle member is held actuated, the operating cam shaft being rotated at a regular operating speed to cause proper insertion and clinching of the staples and being brought to rest immediately thereafter whenever the treadle member is released. With such a control member the operator of the machine may start the machine in operation upon a shoe to correct one or more faulty operations where required, merely by actuating the starting treadle member Without special precautions to avoid the insertion and clinching of stap-les with an insufficient mim'- mum speed of staple driver movement. Also, in such a machine provided with positively actuated staple drivers correcting operations are as conveniently performed as in the patented machine.

While the invention has been disclosed as embodied in a machine having a pattern cam shaft, a shifter member actuated through disconnectible connections to throw th'e driving mechanism for the machine out of operation, and a treadle member forA disconnecting said connections, the invention in its broader aspects is readily applicable to any type of automatic shoe machine having a shoe supporting jack in which means is provided to throw the driving mechanism out of voperation in response to displacement of the guiding means for the shoe from proper operating relationship with the shoe.

With the above and other objects and features in View, the invention is described with reference to the accompanying drawings, and is defined in the appended claims.

In the drawings,

Fig. 1 is a view in right side elevation of an automatic side lasting machine embodying the several features of the invention, portions of the machine being broken away and illustrated in section;

Fig. 2 is a View in side elevation, on an enlarged scale, of a portion at the Yfront end of the machine illustrated in Fig. l, with parts of an enclosing cover removed to illustrate more clearly the operating mechanism;

Fig. 3, a sectional plan view' of the parts illustrated in Fig. 2; e

Fig. 4 is a partial `sectional View of a portion of the' driving'mechanism and controls for the machine taken along the line IV-IV of Fig. 2;

Fig. 5 is a detail View, on an enlarged scale, illustratin'g particularly a portion of a lasting and stapling unit indicating its relationship t0 a. shoe lbeing operated upon during normal operation of the machine, a displacement responsive feeler being shown in retracted position;

Fig. V6 is a similar View of the same parts showing the feeler in active position; and

Fig. 7 is a similar view of the same parts illustrating the action of the `feeler when an improper lasting and stapling operation occurs.

Except as hereinafter described the machine Yillustrated in the drawings is the same in all es- `the jack swinging sential'rparticularsasthe machine disclosed in thelawson patents 'above referred to. The operating devices ofthe 'machine are similar to those of the inventors copending application and consist of a pair of yieldingly separated side lasting grippers 2 and staplinguntsi4 arranged to act simultaneously along Opposite bottom marginal portions of a shoe supported on a last 6. The shoeis illustrated as having an upper 8 and a channeled insole Ito the rib of which the lasting' allowance of the upperY is tensioned and stapled by the machine.' To resist the yielding separation of the lasting units each unit is provided with a 'gripper guiding presser foot II engaging theinside surfaces of the insole rib (see Figs.5to'1). l l

In the operation of the machine a shoe supported on the last is secured to a shoe supporting jack I2 and thejacked shoe presented manually to the operating devices with the lasting units brought together until the presser feet engage the insole rib and the lasting grippers straddle the upper close tothe breast line of the heel. After being properly presented to the machine the shoe is released from manual control and the machine started. Thereafter, a series of successive lasting operations are performed until the toe of the shoe is reached, at which time the operations are terminated, the jacked shoe is auto-. matically disengaged from the operating devices and the machine finallyV brought to rest. During operation of the machine, the shoe is guided by the'presser feet acting on opposite insole ribs,

freely about a pivotalmounting I5 on which it is supported while the presser feet are moved toward and from each other according to the varying distances between the ribs.

The lasting and stapling units are actuated from an operating'cam shaft I4 through suitable connectionsmore fully described in the patents and application above referred lto including a pair of toggles I6 and I8 for each stapling unit arranged to have their respective links moved into positions of alinement during each staple driving operation. The toggle I6 of each stapling unit is connected to operate a staple driver 26 and the toggle I8 is connected to operate a staple former 22. VThe .pattern cam shaft for moving the shoe supporting jack I2 is indicated at 24 connected for intermittent rotary movement with the operating'shaft I4 through an oscillating and longitudinally moving lever the machine. The Vmechanism for driving the 'operating shaft is thesame as in the'patented machine and comprises a main clutch driven from a motorv 2B through a belt 30 and a drive gear.3I (Fig. 2) on a beltdriven countershaft, .The main clutch consists of a driving member 32 having gear teeth meshing with the teeth of the gear 3l and is shown in Fig. 4 rotatably mounted at one end of the operating shaft I4 and 'a driven member 34 keyed to butslidablelengthwise of the operating. shaft Vand provided with a braking sure face 3G cooperating with a similar surface on the machine frame to bring .the machine to rest whenever the driven member is vdisengaged from the driving member. To control the clutch .32, 34 the end of the operating shaft I4ion whichl it is mounted Vis formed with a central bore to receive a compressionspring 33 acting between the inner end of the bore and a pin 4I) passingV diametrically through axialislots in theshaft 30 and into vthe l'iub. of `rthe-driving member 32.Y

26 within the frame of member of" the clutch 'towards the driving member'thus establishing a driving relationship. To disengage thevclutchr members and tobring the machine to rest, the pin 40 is also engaged-by a block 42 between which and a plungerv44 is disposed a thrust bearing 45. The plunger 44 passes loosely through a central opening in a nutl 46 threaded into the end of the operating shaft .I4and is forked at its outer end to support between itsy forked portions a frictionless roller bearing 48 engaging a wedge-shaped shifter membertt. The forked outer end portions of the plunger 44 project beyond roller 43 and surround the sides of the shifter member, fitting within suitable guiding surfaces of the frame to prevent rotation of the plunger with the operating shaft I4. The thrust of the plunger on the shifter member is supported by frictionless rolls 52 mounted in the machine frame in spaced relationship along the shifter member at either side of the line of pressure along which thefforce of the spring 38 is exerted through the plunger. When the shifter member is movedr to the right as viewed in Fig. 4,.the clutch is disengaged and the machine brought to rest and when moved to the left the clutch is engaged and the machine started. To start the machine in operation the right end of the shifter member is drilled with a horizontal bore to receive a compression spring 54, the right end of which engages an upwardly extending arm of aplate 55 screwed to the frame of the machine. Expansion of the spring 54 forces the shifter mem-ber to the left and causes the machine to be started.

To actuate the shifter member in bringing the machine to rest, the upper surface of the member is formed with ,anopen recess 51 (see Figs. 2, 3 and4) to-` receive a pin 58 passing through the slotted end portions of a disconnectible connecting vlink 60, pivotally mounted on a bolt 62 carried'by an oscillating arm 54 secured to a rock shaft 65. The rock shaft 66 is rotatably supported in bearings within the machine frame and carries atr its inner end a cam lever 68 having a roll 1 0 engaging a cam 12 secured to the main operating shaft I4. The cam roll 10 is. forced against the surface of the cam 12 by the action of a tension spring 14 stretched between pivot 62 anda stationary hook 16. The arrangement is such that during rotation of the operating shaft, after -thepin 58 enters-the recess` 51, the shifter member -is actuated against the force of the l spring 54- to bring the machine to rest at a predetermined angular position of the operating shaft with the lasting and stapling units disengaged from fthe shoe.

lThe disconnectible link B0 is normally held downwardly in engagement with the recess in the shifter member 50, e. spring 18 being connected between a pin Yonthe link and a similar pin on the machine frame for this purpose. To disconnect the link 60 from the shifter member the pin 58 at itsrearwardend is headed and is surrounded by a roll just above the upper end of a vertically slidable treadle actuated member 82 mounted within a slot in the frame of the machine. The lower end of the treadle member is pivotally connected to a treadle rod 84 guided in a plate 86 and arranged to pass through the machine frame downwardly to a, pivotal connection with -a starting treadle 88. Whenever the starting treadle 88 is depressed the treadle member is raisedtoenga'ge the roll 80 and to force the The spring is soarranged yasto urge the driven pin 58 out of the recess 56 thus disconnecting the shifter member from the cam lever B8'. As soon as'disconnecticn occurs the spring 54 expands' and the shifter member is actuated to the left to start the machine in operation. After completion of a series of lasting operations on a; shoe and a complete rotation of the patterny cam shaft 24, a pin-90 (Fig. l) on the shaft 24 engages the hooked lower end of a stop rod- 92 slidably mounted in the machine frame and arranged at its upper end to cause the treadl'e member again to be lowered so that the pin 58 of the disconnectible link 50 may again engage the recess of the shifter member.

To retain the treadle member in raised position throughout a complete series of lasting operations and to cause the pin 58 to be`- held disengaged from the recess 55, the central. portion of the treadle member is notched Kalt 94 to receive Aa lug on the upper end of` a three-armed latchV 95 pivotally mounted at 98 in the frame of theV machine; When the. treadle member is raisedztheV latch lug enters the notch 94" and prevents the treadl'e member from being again lowered until. the complete seriesV of lasting operations is finished.` When the stop rodl 92 is depressed at the completion of the lasting operations: .the latch 9 5 is disengagedA from the notch. For this purpose the upper end of the rod 92. has a horizontal projection IDU overlying a horizontal arm of the latch, the latch being yieldingly maintainediin latchedposition by a spring |02 acting. to raise the latch and force it into engagement withthe notchcn. the treadle` member. To guidey the. upper end` of. the stop rod'. it is slidablyl mounted on a shouldered screw |04 passing,

through the slotted upper end off the rod and threaded in the machine frame.

As hasA been stated, automatic meansV are provided in each lasting unity which isf: responsive to displacement of theoperating devices-during lasting operations from proper operating. positions along the. bottom marginal portions of a shoe to actuate the shifter member and bring themachine. to rest' after faulty operation on. the. shoe. |The. means responsive to. displacement of the operating devicesiisbest; illustrated'` in-Fi'gs. 5- to 7r inclusive and consists of a feeler finger4V |053 of generallyinvertedf LV shape pivotally--mounted ati one end: of. itshorizontal; arm on apin |303: secured in the frame of the associated'lasting unit, pass'- ing thro-ugh a., slot in the feeler. linger; At' itsv lower endeach feeler finger isfarrangedto eng-agel the rib of: the insole in. close' proximity to-thei point of: engagement of. the presser foot withl the insole rib. Thev presser foot. I'IZ for each stapling' unit alsoservesas a staple clinching anvil?? against' which the staple former and driver act so that to-insure clinching of a staple in theinsol'efrib the presser footmust engagelthe rib.

Each. feeler finger |.6 is. arranged Yasv closely as'Y possible to. each presser foot and so@ long as a presse-r foot engages the innersurfaceof therib=on the insole. the adjacent feeler linger will be correspondingly guided asiIIUstrat'edin-Fg: 6,` the presser feetV being maintained in position against the insole rib-bytlie yielding separation'f of. the lasting units; If, however, a'L presserlfctl should engageftheinsole rib insuc-lr away as-tof bent' it against-the insoleV` as-A in Fig: 71' or become displaced.` from f it for other' reasons there will beVY nothing to hold the feeler fin-gery inv alinement' withi theY presser foot. the machine under. `these. conditionswould; cause.v astaple: toY be insertedgwitl'iin1A the lasting allow@- Continuous'I operation. off' ance. of the upper without entering the insole rib' or without entering either the upper or the rib'. Once having become displaced from proper engagement with the insole rib the lasting units would separate to vtheir maximum allowable spaced relations and ther displaced presser foot would conti-nue in this relationship throughout the remaining operations of a complete series, so that no further proper lasting operations would be performed and there would be a likelihood of irreparable damage in the parts of the shoe. Accordingly, after'the feeler finger |08 is displaced from the' insole rib in response to an improper operating relationship of a; lasting unit .the machine Yis immediately brought to rest automatically, to enable the operator to reposition the shoe and the operating devices.

For bringing the machine to rest when theY feeler finger is displaced' from the insole rib of a shoe in response to an improper lasting operation the: central angularV portionof each feeler finger isl pivotall-y connected 4at III)- to the lower endofa Bowden wire |5| 2 slidingly'arranged within a sheath I I 4'secured at one end within a clamp H5 screwed to the frame of each lasting unit. The:A other end of. the Bowden Wire ||.2 for each lasting unit. is pivotally connected to one end of an equalizing lever I2!! (see Fig. 3) centrally pivoted. to a slide |22 mounted within a guideway parallel to and just. above shifter member 5t. The. corresponding ends of the Bowden wire sheaths |'4` are connected to a plate |24 secured to the `r'nachineframe. The slide |22 has projecting. downwardly froml its right end a. lug supporting a set screw |25 arranged to engage ther upper rounded endy of a leverk |28 fulcrumed on the machine frame at |30. The lower end of the lever |28 is connected with a tension spring |32 stretched' between the. lever and a stationary pin IIS-'4. The spring |32V urges the rounded end of lever |28 against` the set screw |25` in a direction to cause the feeler lingers IIJIy to be disengaged from thel riby on the insole. Thisl is the position as shownin Fig. 5 assumedv by the feeler lingers during feeding. movement of the shoe between: successive lasting operations.

Tor re-engage the feeler fingersV with the in= sole; rib;- at. the endi of each feeding movement before a new lasting' operation beginsV the. slide |22' has formed therein aiguid'eway |36 oflimited length between the endsl of which. is located a sliding block |38 having'` a central` passage |40.- to receivefa spring |42; The-spring |42 is compressed against a plug |44 threaded into oneend. of the passage. |.4'and at its'other against ashoulder at the end ofv the. guideway |35.. The action of the spring: |42 is tot urge` the block |33`to`- the right' against the right end'of the guideway-` |36. When eachfeeding movement' of the shoe'is terminated thesliding block |2'83isk actedupon by the notched end; ofi anv arm |45- pivotally mounted onf alever |43*` rotatable on a bolt |50Y threaded into the4 end. 0f a stud |'5l projecting from the machine: fi'ame (see Fig. 3'). To'actuate the lever |43.` its lower/end is connectedf throughy af link |52 to the. bolt 62 on' the oscillating arm; 64'. The notchedf end. of. the link |46 is pressed'yieldingly' against.the'enolof` thesliding block |3`8 by-at'ension spring |54 connected between the armiV and a; pin.l |56 on the machine frame. When` the notched end of thearm engages thesliding block |38: it: moves the block to the left andZ urges through the spring |42.: the. slide |22 to which the Bowden wires are connectedfin the same-difrecti'onv until the connected feelerfiingers men- .gage the insole rib. As soonA as this occurs move- `ment of theslide |22 is arrested and the block |38' continues to move yieldingly against the resistance of the spring |42. As theA arm |46 reaches the limit of its leftwise movement its notched end engages an inclined surface |68 on the plate |24 raising the notched end from engagement with the block |42 so that the block is free to return to its original position on the slide |22.

If either of the presser feet becomes displaced from the rib of the insole the Vcorrespon |66 willk immediately move out of alinement with it when-the sliding Ablock |38 is moved toits extreme right-hand position. Under these conditions the slide |22 will be moved by the spring |42 beyond its normal position.Y When the slide is so movedthe set screw |26 engaging the lever |28 will cause the lever to swingen its fulcrum to bringl the lower end of the lever against a pin |60 slidingly mounted in the frame of the machine and passing through a transverse slot in the treadle member 82 with its right end disposed to engage the uppermost arm of the latch 96. :Upon continued movement of the slide |22 the pin |66) will disengage the latch from l the treadle member causing the treadle member to be releasedand the machine brought to rest. After the machine is brought to rest the operator may restore the shoe and the lasting units to proper operating relationship and startl the machine again in op eration.

After the series of operations on the shoe is completed and if it is found that a faulty staple has been inserted or that a repetition of any of the lasting operations is desirable for other reasons, the present machine is provided with means for enabling the operator to start the machine in operation to insert a single pair of staples `or to continue the operations indennitely, so long as the treadle is held actuated manually. If the operator removes his foot from the treadle 88, however, the machine will immediately come to rest so that full control of the operations may be obtained.

To these ends a downwardly extending arm of the latch 96V is provided with a pin |62 pressing loosely through a slot |64 in the rearward end of a selectively actuable control member |66 in the form of a sliding bar supported' in'bearings |68 and |15) carried by the frame of the machine. The forward end of the bar |66 has attached to it a handlebutton |12 disposed in a convenient location for manipulation'by the operator. When the button |12 is drawn forwardly it swings the latch 96 to disengage the treadle member 82 so that it no longer is able tohold the treadle member in a position to disconnect the link 60 from the clutch-operating'slide 50. Thus the machine may be maintained in operation only by holding the treadle depressed. To retain the rod |66 in its forward latch releasing position the rod is provided with a pair of notches |14 along its upper surface into which the wedge-shaped lower end of a spring-pressed plunger |12 may enter selectively, the plunger holding 'the rod frictionally from movement in either direction; When the rodis returned to its rearward position the plunger l|16 moves from one notch tothe other to hold the rod in that position.

The nature and scope of the invention having been indicated and a particular embodiment thereof having been described, what' is claimed is:

1. AY machine for Vuse in the manufacture of shoes, having devices provided with gripper guidfing means for performing a series ofoperations progressively along the bottom margin of a shoe, an operating camshaft andconnections for actuating said devices, a shoe supporting jack,pattern cams and Y connections for controlling vthe relative positions of said devices and jack during operations on a shoe, driving mechanism for rotatingthe operating shaft and'pattern cams, and a shifter member connected to said mechanism andmovable in opposite directions to throw lsaid mechanism into and out of operation, in combination withmeansresponsiveto displacement of the guiding meansl relative tothe shoe for vactuating YVthe shifter member to vbring the machine torest." f v v 2. A machine for use in the manufacture of shoes, khaving devices provided with guiding meansfor performing a series of operations progressively along the-bottom margin of a shoean operating cam shaft andconnections for actuating said devices, a shoe supporting jack, pattern cams and connections for `controlling the relative positions of said devices and jack during the operation on the shoe, driving mechanism for rotating the operating and the pattern cams, a shifter member connected to said mechanism and movable in opposite directions to throw said mechanism into and out of operation, disconnectible connections driven from the operating shaft for actuating the shifter member to disconnect said connections and to throw said mechanism out of operation, and a manually actuated treadle member for disconnecting said connections, in combination with a latch for retaining the treadle member in a position to disconnect said connections, and means responsive to displacement of the guiding means from proper operating relationship to the shoe to release the treadle member from the latch. y

3. Amachine for use in the manufacture of shoes, havingy devices provided )with guiding means for: performing a series of operations progressively along the bottom margin of a Shoe, an operating cam shaft and connections forzactuating said devices, a shoe supporting jack, pattern cams and connections for controlling the relative positions` of said devices and jack during the operation on the shoe, driving mechanism for rotating the operating and the pattern cams, a shifter member connected to said mechanism and movable in opposite directions to `throw said mechanism into and out of operation, disconnectible connections driven v'from the operating shaft for-actuating the shifter member to disconnect saidconnections and to throw said mechanism out of operation, and a manually actuated treadle member for disconnecting said connections, in combination with a latchfor retaining the treadle member in a positionrto disconnect said connections, and a feeler nger on said devices engaging the shoe and acting in response to displacement of the guiding means from proper operating relationship to the shoe to cause the driving mechanism to be thrown out of operation.

4. A machine for use in the manufacture of shoes, having devices providedjwith guiding means for'performing a series of operations progressively along the bottom margin of a shoe, an

operating cam shaft and connections for actuating said devices, a shoe supportingv jack, pattern cams and connections for controlling the relative positions of said devices andjack during the operation on the shoe-,driving mechanism forrotating the operating andthe pattern cams,fa shifter member `connected.to said mechanism .and

`movable in opposite directions to throw said `mechanism into 'and outofoperation, yand disconnectible connections driven from the operating 'shaftfor actuating the shifter member to dis- :connect said connections and to throw said mech-- vanism out of operation, in combination with a slide, a block yieldingly connected Vto Vthe-slide, means for actuating the block during each operation of the machine in a :direction to cause the slide to throwthe driving mechanism out of operation, and a `feeler finger on said devices engaging 1the shoe and acting to prevent movement of the shifter -member Afrom throwing Vthe driving mechanism out of operation so long Vas the guiding means remains in proper operating relationship 'to the shoe.

:5, A machine yfor use lin the manufacture of shoes, :having devices provided `with guiding means `for performing -a series ofV operations progressively alonggthe bottom-margin of a shoe, an operating cam shaft and .connections for actuat- 4ing said devices, a shoe supporting jack, pattern cams and connections vfor controlling the relative positions of saidde'vices and jack during the operation on the shoe, driving mechanism for `rotating the operating and the pattern cams, a shifter member connected to said mechanism and movable in opposite directions to throw said mechanism into and out of operation, and disconnectible connections driven from the operating shaft for actuating the shifter member to disconnect said connections and to throw said mechanism out of operation, 'in combination with a feeler nger on ysaid devices engaging the shoe, a block for actuating the feeler finger, means for actuating the block to cause the feeler finger to be disengaged and reengaged with the shoe during each operation of said devices and to move the feeler linger in response to displacement of the guiding means from proper operating relationship to the shoe to cause the shiftermember to be actuated.

6. A machine for use in the manufacture of shoes, having separate sets of devices for performing'a simultaneous series o-f'operations progressively along the bottom margin of a shoe, an operating cam shaft and connections for actuating said sets of devices, a shoe supporting jack, pattern cams and connections for controlling the relative positions of said devices and the jack during operations on a shoe, `driving mechanism for rotating the operating cam shaft and pattern cams, and a shifter member connected to said Vmechanismand movable -in opposite directions to throw Vsaid mechanism into and out of operation, -in combination with means responsivel to improper operation of either setof `said operating slide connecting the feeler fingers to the slide, and means for actuating the slide in response to displacement of a feeler finger to cause the shifter member to throw the driving mechanism out o'f operation.

8. A machine for use in the manufacture of shoes havingy devices provided with guiding means engaging the marginal portions of a shoe bottom to perform an operation progressively along the shoe, a shoe supporting jack, an operating cam shaft, and-driving mechanism for rotating the cam shaft, in combination with means responsive to displacement of the guiding means from proper operating relationship to lthe marginal portions of the shoe bottom to throw thedriving mechanism out of operation.

9. A side lasting machine .for shoes having ribbed solesl having lasting devices provided with upper stretching grippers arranged to impart an updraw movement away from the sole of a `shoe presented to said devices, and guiding means acting along the rib of the sole to locate vthe upper grippers in position to receive the edge of the shoe upper, a shoe supporting jack, an operating cam shaft for the 'lasting devices, and driving mechanism for rotating the cam shaft, 'in combination with means responsive to a displacement of the guiding means from the rib of the sole to throw the driving mechanism vout of operation.

10. A machine for use in the manufacture of shoes, having devices for performing a series Vof operations progressively along the bottom margin of a shoe, an operating cam shaft and connections for actuating said devices, a shoe supporting jack, pattern cams and connections for controlling the relative positions of said devices and jack during the operation on the shoe, driving mechanism for rotating the operating shaft and pattern cams, a shifter member connected to said mechanism and movable in opposite directions to throw said mechanism into and out of operation, a stop cam driven by the operating shaft and disconnectible connections for actuating the shifter member from the cam to disconnect said connections and throw said mechanism .out of `operation within a `single cycle of operations of the'operating devices, anda manually actuated treadle member for disconnecting said connections When the machine is in a position of rest, in combination with a control member yoperable selectively .to one of two positions to cause the Vtreadle member either to retain the disconnectible connections .disconnected during a complete devices for actuating the shifter member to bring the machine to rest. Y

f7. A machine for use in the manufacture of shoes, having separate sets of devices for performing a simultaneous series of operationsA progressively along the bottom margin of a shoe, an operating cam shaft and-connections for actuating said Ysets of devices, a shoe supporting jack, pattern cams and connections for controlling the 'relative positions of said devices and the jack during operations on a shoe, driving mechanism for rotating the operating cam shaft and pattern cams, and a `shifter member connected to said mechanism and 4movable in opposite directions to `throw said mechanism into and out of operation, in combination with a, feeler finger for each set of devices, .a slidefor causing the shifter member to be moved in a direction to throw the driving mechanismfout of operation, an equalizer on said series of operations along the shoeV or for the period of time only in which the treadle member is manually held actuated.

11..A machine for use in the manufacture of shoes, having devices for performing a series of operations progressively along the bottom margin `of a shoe, an voperating cam shaft and connections for actuating said devices, a shoe supporting jack, pattern cams and connections for controlling vthe relative positions of said devices and jack Yduring the operation on .the shoe, driving mechanism for rotating the operating shaft and pattern cams, a shifter member connected to said lmechanism and movable in opposite directions Vtothrow `said vmechanism into and out of operation, a stop cam drivenV by the operating shaft and disconnectible connections for actuating the shifter member` from the cam to disconnect'said connections and throw said mechanism out of operation within-a single cycle of operations of the operating devices, and a manually actuated treadle member for disconnecting said connections when the machine is in a position of rest, in combination with a control member operable selectively to one of two positions to cause the treadle member either to retain the disconnectible connections disconnected during a complete series of operations along the shoe or for the period of time only in which the treadle member` is manually held actuated, and a stopping connection actuated by the pattern cams for rendering the control member inoperative to cause the disconnectible connections to be retained in disconnected condition.

12. A machine for use in the manufacture of shoes, having devices for performing a series of operations progressively along the bottom margin of a shoe, an operating cam shaft and connections for actuating said devices, a shoe supporting jack, pattern camsand connections for controlling the relative positions of said devices and jack during the operation on the shoe, driving mechanism for rotating the operating shaft and pattern cams, a shifter member connected to said mechanism and movable in opposite directions to throw said mechanism into and out of operation, a stop cam driven by the operating shaft and disconnectible connections for actuating the shifter member from the cam to disconnect said connections and throw said mechanism out of operation within a single cycle of operations of the operating devices, and a manually actuated treadle member for disconnecting said connections when the machine is in a position of rest, in combination with a control member operable selectively to one of two positions to cause the treadle member either to retain the disconnectible connections disconnected during a complete series of operations along the shoe or for the period of time only in which the treadle member is manually held actuated, and means actuated by improper operation of the operating devices for rendering the control member in operative to cause the disconnectible connections to be retained in disconnected condition.

13. A machine for use in the manufacture of shoes, having devices for performing a series of operations progressively along the bottom margin of a shoe, an operating cam shaft and connections for actuating said devices, a shoe supporting jack, pattern cams and connections for controlling the relative positions of said devices and jack during the operation on the shoe, driving mechanism for rotating the operating shaft and pattern cams, a shifter member connected to said mechanism and movable in opposite directions to throw said mechanism into and out of operation, a stop cam driven by the operating shaft and disconnectible connections for actuating the shifter member from the cam to disconnect said connections and throw said mechanism out of operation within a single cycle of operations of the operatingdevices, and a manually actuated treadle member for disconnecting said connections when the machine is in a posiion of rest, in combination with a control memer operable selectively to one of two positions to cause the treadle member either to retain the disconnectible connections disconnected during a complete series of operations along the shoe or for the period of time only in which the treadle member is manually held actuated, and a stopping connection actuated by the pattern cams upon improper operation of the operating devices to render the treadle control member inoperative to cause the disconnectible connections to be retained in disconnected condition.

CHARLES A. ROBINSON. HERMAN A. IMHOF.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,616,714 Topham et al. Feb. 8, 1927 1,952,770 Morrill Mar. 27, 1934 

